Please help me with 9,11,,13. Show work and explain please

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asked Mar 5, 2017 175k views

2 Answers

Hersh · Answer 1 · 2017-03-09T09:03:55+0000

14 = x - 9...this is an open sentence...because we do not know if this is a true or a false statement...we do not know what the variable is.

4 - 15 = 22 - 33
-11 = -11.....this is true

-7(5-9) = 19 - 3(-3)
-7(-4) = 19 + 9
28 = 28 ....this is true

Please help me with 9,11,,13. Show work and explain please

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